SUB SOIL INVESTIGATION, DESIGN, DRAWING AND CONSTR OF 80 MTR SPAN MAJOR PMT SHERE THAPA BRIDGE OVER ISMI-SIKO NALLAH INCLUDING APPROACH ROADS AT KM 0.630 ON ROAD TCC-MAZA THROUGH EPC MODE UNDER 128RCC/23BRTF/PROJECT ARUNANK IN ARUNACHAL PRADESH SUB SOIL INVESTIGATION, DESIGN, DRAWING AND CONSTR OF 80 MTR SPAN MAJOR PMT SHERE THAPA BRIDGE OVER ISMI-SIKO NALLAH INCLUDING APPROACH ROADS AT KM 0.630 ON ROAD TCC-MAZA THROUGH EPC MODE UNDER 128RCC/23BRTF/PROJECT ARUNANK IN ARUNACHAL PRADESH